On the surface, it might have seemed that making last season's winner USA1 even stronger would be impossible, but they have found a way, demolishing the field in just over three hours with Gennady on the team. Well done!
It would be nice to gather Petr Team again to participate, but given that the number of stages in a year is ~2x that of the Open Cup, with a stage is happening almost every weekend, the time commitment required to feel a real part of the proceedings would be way too big. We should try to do a one-off round some time, though :)problems, results, top 5 on the left, analysis, discussion). Quite fittingly, the first two places in the round went to the problemsetter (well, well) and the winner of AWTF. Congratulations to both!the last week's summary, I have mentioned a Codeforces problem: you are given an array of at most 10000 integers, each between 0 and 260. In one operation, you split the array in the middle into two parts, compute the bitwise xor of each part, and discard the part where the bitwise xor is smaller. In case they are equal, you may discard either part. After doing this operation several times, you have just one number remaining. Which positions in the initial array could this number correspond to?